Alrashid Cyber Mall, is Designed and hosted by Nova Stars Informations Services, Memeber of The Saudi Network, Trade and business informations and links to Saudi Arabia, Arabian gulf and middle east area.

Quran, Arabic and English
Nova Stars Elecronics

 
Saudi Arabia, Trade and business informations and links to Saudi Arabia, Arabian gulf and middle east area.
Member of
The Saudi Network, Trade and business informations and links to Saudi Arabia, Arabian gulf and middle east area.
Saudi Arabia Trade and Business Directory
Nova Stars Information Services, Trade and business informations and links to Saudi arabia, arabian gulf and middle east area.
Special Communication Systems
Home Table of Content Search Company Profile Nova Blogs

Fiber Optics FAQ

 

 

Fiber Optics FAQ

Q: How Does a Fiber Optic Cable Work?

A: Over the last 20 years or so, fiber optic lines have taken over and transformed the long distance telephone industry. Optical fibers are also a huge part of making the Internet available around the world. When fiber replaces copper for long-distance calls and Internet traffic, it dramatically lowers costs.

To understand how a fiber optic cable works, imagine an immensely long drinking straw or flexible plastic pipe. For example, imagine a pipe that is several miles long. Now imagine that the inside surface of the pipe has been coated with a perfect mirror. Now imagine that you are looking into one end of the pipe. Several miles away at the other end, a friend turns on a flashlight and shines it into the pipe. Because the interior of the pipe is a perfect mirror, the flashlight's light will reflect off the sides of the pipe (even though the pipe may curve and twist) and you will see it at the other end. If your friend were to turn the flashlight on and off in a morse code fashion, your friend could communicate with you through the pipe. That is the essence of a fiber optic cable!

Making a cable out of a mirrored tube would work, but it would be bulky and it would also be hard to coat the interior of the tube with a perfect mirror. A real fiber optic cable is therefore made out of glass. The glass is incredibly pure so that, even though it is several miles long, light can still make it through (imagine glass so transparent that a window several miles thick still looks clear). The glass is drawn into a very thin strand, with a thickness comparable to that of a human hair. The glass strand is then coated in two layers of plastic.

 

By coating the glass in plastic, you get the equivalent of a mirror around the glass strand. This mirror creates total internal reflection, just like a perfect mirror coating on the inside of a tube does. You can experience this sort of reflection with a flashlight and a window in a dark room. If you direct the flashlight through the window at a 90 degree angle, it passes straight through the glass. However, if you shine the flashlight at a very shallow angle (nearly parallel to the glass), the glass will act as a mirror and you will see the beam reflect off the window and hit the wall inside the room. Light traveling through the fiber bounces at shallow angles like this and stays completely within the fiber.

To send telephone conversations through a fiber optic cable, analog voice signals are translated into digital signals. A laser at one end of the pipe switches on and off to send each bit. Modern fiber systems with a single laser can transmit billions of bits per second -- the laser can turn on and off several billions of times per second. The newest systems use multiple lasers with different colors to fit multiple signals into the same fiber.

Modern fiber optic cables can carry a signal quite a distance -- perhaps 60 miles (100 km). On a long distance line, there is an equipment hut every 40 to 60 miles. The hut contains equipment that picks up and retransmits the signal down the next segment at full strength

 

Q: What is the definition of Fiber Optics?

A: A technology that uses glass (or plastic) threads (fibers) to transmit data. A fiber optic cable consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves.

Fiber optics has several advantages over traditional metal communications lines:

  • Fiber optic cables have a much greater bandwidth than metal cables. This means that they can carry more data.
  • Fiber optic cables are less susceptible than metal cables to interference.
  • Fiber optic cables are much thinner and lighter than metal wires.
  • Data can be transmitted digitally (the natural form for computer data) rather than analogically.

The main disadvantage of fiber optics is that the cables are expensive to install. In addition, they are more fragile than wire and are difficult to split.

Fiber optics is a particularly popular technology for local-area networks. In addition, telephone companies are steadily replacing traditional telephone lines with fiber optic cables. In the future, almost all communications will employ fiber optics.

 

 

 

Car rentals in over 6000 locations worldwide

 

 

 

Back Home Up Next

Best Hotel Reservation

In Saudi Arabia & World Wide

Saudi Arabia
 Alrashid Cyber Mall, member of The Saudi Network, Trade and business informations and links to Saudi arabia, arabian gulf and middle east area.
Shopping in Saudi Arabia

Send E-mail to TSN@The-Saudi.Net with questions or comments about The Saudi Network.
1001 Arabian Network, Alrashid Cyber Mall and The Saudi Network are members of Nova* Stars* Information Services
The Saudi Network, Trade and business information and links to
Saudi Arabia, Arabian Gulf and Middle East Area.

morocco, libya, lebanon, kuwait, jordan, iraq, egypt, bahrain, algeria, yemen, uae, tunisia, syria, sudan, qatar, palestine, oman

We are Looking for Business Sponsorship or Marketing Partnership